Willow Mason Wasp, Heesch, Netherlands

This little wasp somehow managed to enter my man cave, which normally requires permission in writing, and was then looking for a way out, which is the correct thing to do. I photographed it on the inside of a window and then released it to the outdoors.

It was very active so the photo is a bit blurry, but it does show the key identifiable parts of this species. Size 7-11mm.